I am not sure "vandalism" is the right term, when it comes to damaging a prison wall for a whole nation.
It was a symbol of fear and oppression. People were shot at the wall every year, so sure, not everyone (or maybe only a few) who joined, were freedom fighters or deeply philosophical about the meaning of what they were doing. But it still was a liberating act, doing something that likely would have got you shot, just the day before. No matter if you would have tried it from the western or eastern side.
(even though of course, it was more likely from the eastern side, the western side was already full of graffiti, but actually damaging the wall, also from the western side, would have not been very dangerous. People did do this to help people flee the east on purpose. And some of those helpers did get shot.)
I am not sure "vandalism" is the right term, when it comes to damaging a prison wall for a whole nation.
It was a symbol of fear and oppression. People were shot at the wall every year, so sure, not everyone (or maybe only a few) who joined, were freedom fighters or deeply philosophical about the meaning of what they were doing. But it still was a liberating act, doing something that likely would have got you shot, just the day before. No matter if you would have tried it from the western or eastern side.
(even though of course, it was more likely from the eastern side, the western side was already full of graffiti, but actually damaging the wall, also from the western side, would have not been very dangerous. People did do this to help people flee the east on purpose. And some of those helpers did get shot.)